Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2021	Dec. 31, 2020
Stockholders equity:
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, authorized shares	1,000,000	1,000,000
Preferred stock, issued shares	0	0
Preferred stock, outstanding shares	0	0
Common stock, par value	$ 0.60	$ 60
Common stock, authorized shares	50,000,000	50,000,000
Common stock, issued shares	18,298,999	13,962,366
Common stock, outstanding shares	16,848,599	12,511,966
Treasury stock, shares	1,450,400	1,332,458